Both the Currant Bluetooth Smart Outlet and Currant WiFi Smart Outlet are 3.2in x 2.5in x 1.5in (8.2cm x 6.3cm x 3.8cm). The ground pin (the longest metal portion of the rear plug) extends 0.8in (2.1cm) out from the surface of the rear face of the Currant Smart Outlet. 

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